solar

Dandelion Renewables - Edmonton's newest solar installation company

Edmonton's newest solar installation company, Dandelion Renewables

My friend Mike has been working for the past year on a new business, and I think that his timing is perfect: there has never been a cheaper time to install solar electric modules on your house.

A mathematician and project feasability modeller by profession, Mike is passionate about making solar work for his clients. He is one of two people whom I've met who truly understands your electricity bill (Gordon Howell is the other one - how is it okay that only the best experts understand a freakin bill?), and he is looking to put that understanding to good use.

The solar electric industry is undergoing an upheaval. Although I don't care to know the details, the result is that the price of PV modules right now is roughly one quarter of what I paid just a few years ago.

Mike tells me that he can achieve rates of return between 3%-5% for his clients on solar installations. That investment is more secure than any stock (the equipment can be covered by home insurance), and it turns you into a green energy producer. How cool is that?

If I didn't already have every square inch of my house covered with PV modules, I would hire Mike of Dandelion Renewables to install solar panels on my house.

Solar Retrofit Part 9: Monitoring

I thought I'd share some graphs showing the output of my solar collectors and the results of my recent renovations (collector installation included) on my home energy use.  Here is the heat collected (measured in kwh) plotted with the maximum daytime temperature:  read more... »

Solar Retrofit Part 8: Winter performance

Today (Saturday November 20th) was the first sunny day in a while.  While cleaning up the breakfast dishes I was not surprised to hear the solar pump start.  When I checked I found that my solar tank was down to 20 degrees C, the solar collectors were at 29 degrees C and the outside temperature was minus 17 degrees C.  What did surprise me was that when I left the house to run some errands (around 10:40 AM) I found the collectors were still partially covered in snow! 

Snow covered collectors: Partially obscured flat plate collectors

Snow covered collectors

This mean that my collectors managed to get a 45 degree C differential to the ambient temperature even while partially obscured.  How great is that?

PV Modules

PV_Modules

 This just in from resident Net Zero House expert and Edmonton green leader Bob Heath:

The latest issue of Home Power magazine has an article entitled "Blast From The Past" written by Martin Holladay. He tested a 33 watt PV module that he had bought in 1980 for $275.00 US. He found that the module was still performing at better than factory spec. A quote from the article - "A PV cell is a rock that makes electricity."
Another quote from the same issue of HP - "A PV module is the closest thing we have to perpetual motion [and] is the most reliable electric generator in the known universe." —Joel Davidson, SOLutions in Solar Electricity

Germany will install 6,000,000 kilowatts of PV modules this year. Shouldn’t we Albertans also be investing in these en masse in order to make our electricity supply more resilient (not to mention greener) in a future of declining fossil fuel availability?